Apparently not all recessed brake bolts are the same diameter?
05-21-23, 10:03 AM
#1
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Apparently not all recessed brake bolts are the same diameter?
Oops. Snag. I thought the OD of recessed nuts were the same 1.0 mm. Are there thinner ones or is it just a funky frame that wants thinner.
Now whether to drill/auger/file it larger or source thinner nuts
Now whether to drill/auger/file it larger or source thinner nuts
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
05-21-23, 10:30 AM
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a nut with an OD of 1.0mm would be a fitting suitable for a watch movement
in my experience all of the brake mounting bolts have worked with have had a thread of 6.0mm X 1.0
even an angry Terminator would have difficulty starting a 1.0mm OD nut on such a bolt
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05-21-23, 10:31 AM
#3
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Haha. Oops. That SHOULD say 8.0 mm OD. I need something about 7.0mm or have to expand the hole to 8.0 mm
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
05-21-23, 10:35 AM
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Buono incasso!
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Buono incasso!
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05-21-23, 10:40 AM
#5
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Weird. Same diameter. Longer bolt won’t go in, shorter with ease.
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
05-21-23, 10:55 AM
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incasso brake mount holes are counterbored on their backside
a small diameter hole to accept the diameter of the nut's "sleeve" and a larger counterbore to accept the head/flange of the "nut"
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incasso brake mount holes are counterbored on their backside
a small diameter hole to accept the diameter of the nut's "sleeve" and a larger counterbore to accept the head/flange of the "nut"
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05-21-23, 11:00 AM
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yes that hole looks like it already has a bushing in it.
try putting your nut on a piece of threaded material and chuck it in your drill. Using a flat file very carefully, reduce the diameter just enough to fit.
Or, using your 5-axis Mori-Seiki machining center, turn a new part out of titanium, preferably in an exotic alloy like Ti6Al7Nb
/markp
try putting your nut on a piece of threaded material and chuck it in your drill. Using a flat file very carefully, reduce the diameter just enough to fit.
Or, using your 5-axis Mori-Seiki machining center, turn a new part out of titanium, preferably in an exotic alloy like Ti6Al7Nb
/markp
05-21-23, 11:10 AM
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Hey! This isn't the Huffy/Campy weight weenie thread. Besides that Ti needs a Trizac belt to form it into shape. Har! MH
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05-21-23, 11:36 AM
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next we shall be getting a report from Scotty on the status of the dilitihium crystals...
"beameth me uppeth Scotty"
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next we shall be getting a report from Scotty on the status of the dilitihium crystals...
"beameth me uppeth Scotty"
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05-21-23, 12:43 PM
#13
Disraeli Gears
That's what you get for messing with non-vintage stuff. Welcome to the March of Time, with innovations we didn't need that prevent us from doing the simplest things that used to work just fine.
05-21-23, 01:38 PM
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problem averted...
And for sure the modern stuff is not always made to tolerances but this frame is actually pretty decently made.
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super, 1971 Raleigh International, 1998 Corratec Ap & Dun, 1991 Peugeot Slimestone
05-21-23, 01:54 PM
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spoken like a true retro-grouch of the first order
"juvela says as he looks into the mirror..."
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